Well, she is so rich a great deal because her parents were rich. That's how it works. It's so much easier to multiply that wealth when your parents have set-up everything for you without having to lift a finger to prepare and suffer.
Nonetheless, I do think she is genuinely smart. She has smart parents, she was well-educated in good schools. I don't think she's particularly articulate but that can come with training (which she has all the time and money in the world so no problem).
I don't like the Kardashians but I would hate them a lot less if they decided to actually do something practical and worthwhile in their time and with their money than just sit around and be filmed and instagrammed. No one should be laughing at her, they should be cheering her on because this is what rich people SHOULD be doing with their money.